[Bug or Suggestion]About HP Prime G1 New Beta Firmware

[yangyongkang]

I am back again，This article Mainly about CAS
(i)
Enter in the HP Prime CAS interface

Code:

plotfunc(x^(2*ln(x)),x)

Then click Show and the calculator will restart.

(ii)
Regarding the multivariate function to find partial derivatives, hp prime does not work well.
Input

Code:

simplify(diff(f(r*cos(α)*cos(β),r*sin(α)*cos(β),r*sin(β)),r))

Calculator output

Code:

"Expression used like a function diff(f,2)
You should write subst(diff(f,2),f,r*cos(α)*cos(β),r*cos(β)*sin(α),r*sin(β)) 错误: 宗量值错误"

(iii)
-LambertW() function is not supported enough
E.g

Code:

diff(LambertW(x),x)

Code:

plotfunc(LambertW(x),x)

The result is returned as it is.